SURFACE MODIFIED GLASS FIBERS

• US 20120121975A1
• Filed: 11/23/2011
• Published: 05/17/2012
• Est. Priority Date: 05/21/2010
• Status: Abandoned Application

• Current Assignee: Hollingsworth & Vose Company
• Original Assignee: Hollingsworth & Vose Company
• Inventors: Rajaram, Mohan, Zguris, George C.
• Application Number:
  US13/303,999
• Publication Number:
  US 20120121975A1
• Time in Patent Office: Days
• US Class Current: 429/203
• CPC Class Codes: C03C 13/00 Fibre or filament compositions manufacture of fibres or filaments C03B37/00
• CPC Class Codes: C03C 25/66 Chemical treatment, e.g. leaching, acid or alkali treatment dehydroxylation C03C25/64
• CPC Class Codes: H01M 10/06 Lead-acid accumulators semi-lead accumulators H01M10/20
• CPC Class Codes: H01M 10/10 Immobilising of electrolyte
• CPC Class Codes: H01M 10/121 Valve regulated lead acid batteries [VRLA]
• CPC Class Codes: H01M 50/4295 Natural cotton, cellulose or wood
• CPC Class Codes: H01M 50/44 Fibrous material
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y10T 428/298 Physical dimension

Abstract

Compositions including glass fibers with a high surface atomic percentage of oxygen bonded to silicon wherein the fibers form at least part of a battery separator or other battery component.

Claims

1. A composition comprising:

glass fibers with a surface atomic percentage of oxygen bonded to silicon of at least about 45 percent;

wherein the fibers form at least a part of a battery separator.

2. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is measured by XPS at about 532.6 eV.

3. The composition of claim 1, wherein the glass fibers comprise between about 50 weight percent to about 75 weight percent silica, between about 1 weight percent to about 5 weight percent aluminum oxide, and less than about 25 weight percent sodium oxide.

4. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is measured to a depth of between about 100 and 150 Angstroms from the surface of the glass fibers.

5. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is at least about 48 percent.

6. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is at least about 51 percent.

7. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is at least about 54 percent.

8. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is at least about 57 percent.

9. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is at least about 60 percent.

10. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is at least about 63 percent.

11. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is at least about 65 percent.

12. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is in the range of about 45 to about 65 percent.

13. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is in the range of about 51 to about 65 percent.

14. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is in the range of about 54 to about 65 percent.

15. The composition of claim 1, wherein the surface atomic percentage of oxygen bonded to silicon is in the range of about 60 to about 65 percent.

16. The composition of claim 1, wherein the glass fibers comprise between about 60 weight percent and about 70 weight percent silica.

17. The composition of claim 1, wherein the glass fibers comprise between about 0.5 weight percent and about 30 weight percent bismuth oxide.

18. The composition of claim 1, wherein the glass fibers have an average diameter between about 0.1 and about 10 microns.

19. The composition of claim 1, wherein the glass fibers have an average diameter between about 0.5 and about 2 microns.

20. The composition of claim 1, wherein the glass fibers have an average diameter between about 0.5 and about 1 microns.

21. The composition of claim 1, wherein the glass fibers have an average diameter between about 1 and about 2 microns.

22. A battery, comprising:

a first electrode;

a second electrode, wherein at least one of the first and second electrodes comprises lead;

a separator between the first and second electrodes, wherein the separator comprises glass fibers with a surface atomic percentage of oxygen bonded to silicon of at least about 45 percent; and

an electrolytic solution.

23-43. -43. (canceled)

44. A lead acid battery, comprising:

a positive electrode;

a negative electrode;

an electrolytic solution; and

a means for shifting the voltage at which hydrogen is produced at the negative electrode by between about 10 mV and about 120 mV.

45. The lead acid battery of claim 44, wherein the battery comprises a means for shifting the voltage at which hydrogen is produced at the negative electrode by between about 30 mV and about 60 mV.